Sergey Senozhatsky 3942d29918 mm/slab_common: allow NULL cache pointer in kmem_cache_destroy() ...

kmem_cache_destroy() does not tolerate a NULL kmem_cache pointer argument
and performs a NULL-pointer dereference.  This requires additional
attention and effort from developers/reviewers and forces all
kmem_cache_destroy() callers (200+ as of 4.1) to do a NULL check

    if (cache)
        kmem_cache_destroy(cache);

Or, otherwise, be invalid kmem_cache_destroy() users.

Tweak kmem_cache_destroy() and NULL-check the pointer there.

Proposed by Andrew Morton.

Link: https://lkml.org/lkml/2015/6/8/583
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2015-09-08 15:35:28 -07:00

..

kasan

x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()

2015-08-22 14:54:55 +02:00

backing-dev.c

inode: rename i_wb_list to i_io_list

2015-08-17 23:38:10 -04:00

balloon_compaction.c

mm/balloon_compaction: fix deflation when compaction is disabled

2014-10-29 16:33:15 -07:00

bootmem.c

mm: page_alloc: pass PFN to __free_pages_bootmem

2015-06-30 19:44:55 -07:00

cleancache.c

cleancache: remove limit on the number of cleancache enabled filesystems

2015-04-14 16:49:03 -07:00

cma_debug.c

mm/cma_debug: correct size input to bitmap function

2015-07-17 16:39:54 -07:00

cma.c

mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute

2015-06-24 17:49:44 -07:00

cma.h

mm: cma: mark cma_bitmap_maxno() inline in header

2015-08-14 15:56:32 -07:00

compaction.c

mm/compaction.c: fix "suitable_migration_target() unused" warning

2015-04-15 16:35:20 -07:00

debug-pagealloc.c

mm/debug-pagealloc: make debug-pagealloc boottime configurable

2014-12-13 12:42:48 -08:00

debug.c

tracing: Rename ftrace_event.h to trace_events.h

2015-05-13 14:05:12 -04:00

dmapool.c

mm/dmapool.c: change is_page_busy() return from int to bool

2015-09-04 16:54:41 -07:00

early_ioremap.c

mm: create generic early_ioremap() support

2014-04-07 16:36:15 -07:00

fadvise.c

writeback: implement and use inode_congested()

2015-06-02 08:33:35 -06:00

failslab.c

switch debugfs to umode_t

2012-01-03 22:54:56 -05:00

filemap.c

fs: do not prefault sys_write() user buffer pages

2015-09-08 15:35:28 -07:00

frontswap.c

frontswap: allow multiple backends

2015-06-24 17:49:45 -07:00

gup.c

mm: make GUP handle pfn mapping unless FOLL_GET is requested

2015-09-04 16:54:41 -07:00

highmem.c

mm/highmem: make kmap cache coloring aware

2014-08-06 18:01:22 -07:00

huge_memory.c

mm: make set_recommended_min_free_kbytes() return void

2015-09-08 15:35:28 -07:00

hugetlb_cgroup.c

mm: page_counter: pull "-1" handling out of page_counter_memparse()

2015-02-11 17:06:02 -08:00

hugetlb.c

mm/hugetlb.c: make vma_has_reserves() return bool

2015-09-04 16:54:41 -07:00

hwpoison-inject.c

mm/memory-failure: introduce get_hwpoison_page() for consistent refcount handling

2015-06-24 17:49:42 -07:00

init-mm.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

internal.h

mm: defer flush of writable TLB entries

2015-09-04 16:54:41 -07:00

interval_tree.c

mm: replace vma->sharead.linear with vma->shared

2015-02-10 14:30:31 -08:00

Kconfig

mm/Kconfig: NEED_BOUNCE_POOL: clean-up condition

2015-07-23 20:59:41 +02:00

Kconfig.debug

mm/debug_pagealloc: remove obsolete Kconfig options

2015-01-08 15:10:52 -08:00

kmemcheck.c

mm/slab_common: move kmem_cache definition to internal header

2014-10-09 22:25:50 -04:00

kmemleak-test.c

mm/kmemleak-test.c: use pr_fmt for logging

2014-06-06 16:08:18 -07:00

kmemleak.c

mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()

2015-06-24 17:49:46 -07:00

ksm.c

mm: remove rest of ACCESS_ONCE() usages

2015-04-15 16:35:18 -07:00

list_lru.c

memcg: reparent list_lrus and free kmemcg_id on css offline

2015-02-12 18:54:10 -08:00

maccess.c

lib: move strncpy_from_unsafe() into mm/maccess.c

2015-08-31 12:36:10 -07:00

madvise.c

mm/madvise.c: make madvise_behaviour_valid() return bool

2015-09-04 16:54:41 -07:00

Makefile

userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation

2015-09-04 16:54:41 -07:00

memblock.c

mm/memblock.c: WARN_ON when flags differs from overlap region

2015-09-08 15:35:28 -07:00

memcontrol.c

mm, oom: pass an oom order of -1 when triggered by sysrq

2015-09-08 15:35:28 -07:00

memory_hotplug.c

memory-hotplug: add hot-added memory ranges to memblock before allocate node_data for a node.

2015-09-04 16:54:41 -07:00

memory-failure.c

mm/hwpoison: fix panic due to split huge zero page

2015-08-14 15:56:32 -07:00

memory.c

mm, dax: use i_mmap_unlock_write() in do_cow_fault()

2015-09-08 15:35:28 -07:00

mempolicy.c

userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx

2015-09-04 16:54:41 -07:00

mempool.c

mm/mempool.c: kasan: poison mempool elements

2015-04-15 16:35:20 -07:00

memtest.c

memtest: remove unused header files

2015-09-08 15:35:28 -07:00

migrate.c

mm: fix status code which move_pages() returns for zero page

2015-09-04 16:54:41 -07:00

mincore.c

mincore: apply page table walker on do_mincore()

2015-02-11 17:06:06 -08:00

mlock.c

userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx

2015-09-04 16:54:41 -07:00

mm_init.c

mm: meminit: remove mminit_verify_page_links

2015-06-30 19:44:56 -07:00

mmap.c

mremap: fix the wrong !vma->vm_file check in copy_vma()

2015-09-08 15:35:28 -07:00

mmu_context.c

sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm

2014-02-21 08:50:17 +01:00

mmu_notifier.c

mmu_notifier: add the callback for mmu_notifier_invalidate_range()

2014-11-13 13:46:09 +11:00

mmzone.c

mm: microoptimize zonelist operations

2015-02-11 17:06:02 -08:00

mprotect.c

userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx

2015-09-04 16:54:41 -07:00

mremap.c

mremap: simplify the "overlap" check in mremap_to()

2015-09-04 16:54:41 -07:00

msync.c

mm: remove rest usage of VM_NONLINEAR and pte_file()

2015-02-10 14:30:31 -08:00

nobootmem.c

mm: page_alloc: pass PFN to __free_pages_bootmem

2015-06-30 19:44:55 -07:00

nommu.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2015-09-01 18:46:42 -07:00

oom_kill.c

mm, oom: remove unnecessary variable

2015-09-08 15:35:28 -07:00

page_alloc.c

mm, oom: pass an oom order of -1 when triggered by sysrq

2015-09-08 15:35:28 -07:00

page_counter.c

mm: page_counter: pull "-1" handling out of page_counter_memparse()

2015-02-11 17:06:02 -08:00

page_ext.c

mm/page_owner: keep track of page owners

2014-12-13 12:42:48 -08:00

page_io.c

fs: use helper bio_add_page() instead of open coding on bi_io_vec

2015-08-13 12:32:00 -06:00

page_isolation.c

CMA: page_isolation: check buddy before accessing it

2015-05-14 17:55:51 -07:00

page_owner.c

mm/page_owner: set correct gfp_mask on page_owner

2015-07-17 16:39:54 -07:00

page-writeback.c

writeback: fix initial dirty limit

2015-08-07 04:39:42 +03:00

pagewalk.c

mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers

2015-03-25 16:20:30 -07:00

percpu-km.c

percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated

2014-09-02 14:46:05 -04:00

percpu-vm.c

percpu: move region iterations out of pcpu_[de]populate_chunk()

2014-09-02 14:46:02 -04:00

percpu.c

percpu: clean up of schunk->map[] assignment in pcpu_setup_first_chunk

2015-07-21 11:31:00 -04:00

pgtable-generic.c

mm: clarify that the function operates on hugepage pte

2015-06-24 17:49:44 -07:00

process_vm_access.c

process_vm_access: switch to {compat_,}import_iovec()

2015-04-11 22:27:12 -04:00

quicklist.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

readahead.c

writeback: implement and use inode_congested()

2015-06-02 08:33:35 -06:00

rmap.c

mm: defer flush of writable TLB entries

2015-09-04 16:54:41 -07:00

shmem.c

ipc: use private shmem or hugetlbfs inodes for shm segments.

2015-08-07 04:39:41 +03:00

slab_common.c

mm/slab_common: allow NULL cache pointer in kmem_cache_destroy()

2015-09-08 15:35:28 -07:00

slab.c

slab: infrastructure for bulk object allocation and freeing

2015-09-04 16:54:41 -07:00

slab.h

mm/slab.h: fix argument order in cache_from_obj's error message

2015-09-04 16:54:41 -07:00

slob.c

slab: infrastructure for bulk object allocation and freeing

2015-09-04 16:54:41 -07:00

slub.c

mm/slub: don't wait for high-order page allocation

2015-09-04 16:54:41 -07:00

sparse-vmemmap.c

mm/sparse: use memblock apis for early memory allocations

2014-01-21 16:19:47 -08:00

sparse.c

mm: use macros from compiler.h instead of __attribute__((...))

2014-04-07 16:35:54 -07:00

swap_cgroup.c

mm: page_cgroup: rename file to mm/swap_cgroup.c

2014-12-10 17:41:09 -08:00

swap_state.c

mm: remove rest of ACCESS_ONCE() usages

2015-04-15 16:35:18 -07:00

swap.c

mm: drop bogus VM_BUG_ON_PAGE assert in put_page() codepath

2015-06-24 17:49:42 -07:00

swapfile.c

mm: /proc/pid/smaps:: show proportional swap share of the mapping

2015-09-08 15:35:28 -07:00

truncate.c

memcg: add per cgroup dirty page accounting

2015-06-02 08:33:33 -06:00

userfaultfd.c

userfaultfd: avoid mmap_sem read recursion in mcopy_atomic

2015-09-04 16:54:41 -07:00

util.c

mm: uninline and cleanup page-mapping related helpers

2015-04-15 16:35:19 -07:00

vmacache.c

mm,vmacache: count number of system-wide flushes

2014-12-13 12:42:48 -08:00

vmalloc.c

mm/vmalloc: get rid of dirty bitmap inside vmap_block structure

2015-04-15 16:35:18 -07:00

vmpressure.c

mm/vmpressure.c: fix race in vmpressure_work_fn()

2014-12-02 17:32:07 -08:00

vmscan.c

mm: defer flush of writable TLB entries

2015-09-04 16:54:41 -07:00

vmstat.c

vmstat: Reduce time interval to stat update on idle cpu

2015-02-11 17:06:07 -08:00

workingset.c

list_lru: add helpers to isolate items

2015-02-12 18:54:10 -08:00

zbud.c

zpool: remove zpool_evict()

2015-06-25 17:00:37 -07:00

zpool.c

zpool: remove zpool_evict()

2015-06-25 17:00:37 -07:00

zsmalloc.c

zpool: remove zpool_evict()

2015-06-25 17:00:37 -07:00

zswap.c

zswap: runtime enable/disable

2015-06-25 17:00:37 -07:00